Mermaid Highlight

Mermaid gives us a way to style nodes through the use of css, but rather than using normal css selectors we need to use style <nodeid>. This also applies to subgraphs, and we can use the name of the subgraph in place of the nodeid.

graph TD; a --> A A --> B B --> C style A fill:#f9f,stroke:#333,stroke-width:4px style B fill:#f9f,stroke:#333,stroke-width:4px subgraph one a end style one fill:#BADA55 

produces the following graph